SOLUTION: Thr profit on a watch is given by P=p^2-13x-80, where x is the number of watches sold per day. How many watches were sold on a day when there was a $50 loss?

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Question 105173: Thr profit on a watch is given by P=p^2-13x-80, where x is the number of watches sold per day. How many watches were sold on a day when there was a $50 loss?
Answer by elima(1433) About Me  (Show Source):
You can put this solution on YOUR website!
The profit on a watch is given by P=p^2-13x-80, where x is the number of watches sold per day. How many watches were sold on a day when there was a $50 loss?
Since there was a loss and not a profit;
p=-50
-50=%28-50%29%5E2-13x-80
-50=2500-13x-80
13x=2500-80+50
13x=2470
x=190
:)